One loan · One retirement · The age they cross
Your loan schedule already names the age you’ll be at the last payment. Sign at 40 and that age is usually past 70. Pick a better age. This ledger finds the exact extra per month, or the one check today, that gets you there.
The ledger correction
Enter your loan and birth date, then set the age you want the loan gone to see the correction.
The $221.89 a month that buys age 65 earns a guaranteed 6.5%. If the market could beat that after tax, the same dollars might do more; the race prices both roads to the cent. Race it before you commit.
Want to aim at a date instead of a birthday? The debt-free-by-date calculator runs the same search on a chosen month. The payoff calculator turns the answer into a full schedule. Your loan carries over; your birth date stays here.
All the math runs in your browser; nothing you enter is stored or sent anywhere. Last updated July 2026.
Every row is the same full search, run live on your loan: the minimum extra that lands the last payment by that birthday.
| Paid off by | Extra needed / mo | One check today | Interest kept |
|---|
One honest note: paying off the loan ends principal and interest only. Property taxes and insurance never stop. Budget for both, even mortgage-free.
Dollar figures use the example: a $400,000 loan at 6.5% over 30 years, first payment Aug 2026, borrower born June 1985: 41 at signing, 71 at the scheduled last payment. Run your own numbers above.
Retire with this mortgage and your savings must produce $30,339 a year before a single grocery. That is the $2,528.27 payment, twelve times a year, from a fixed income. At a 4% withdrawal rate it takes about $758,481 of portfolio to fund. Kill the payment first and you need none of it. A paid-off house does the work of three-quarters of a million dollars in savings. That is the prize this page is pricing.
On the example loan, paid-off-by-67 costs $134.69 a month extra. By 65 it’s $221.89. By 60, $538.00. By 55, $1,117.48. The price roughly doubles every five birthdays you move the flag. Fewer payments must carry the same principal. Waiting works the same way in reverse: every year you delay raises the price of your age. The cheapest plan is the one that starts this month.
A bad market just before or after retirement does permanent damage. Selling investments in a downturn to pay fixed bills is how portfolios die early. A paid-off mortgage is immune. Its 6.5% was locked the day you prepaid, and the bill it deletes never comes back. Could the same dollars earn more invested? Maybe; prepay vs invest prices that honestly. But a paid-off house has one power no fund can match: it cannot have a bad year.
Every tool inherits what you type here. Nothing to re-enter, nothing stored. Dollar figures are the example loan: $400,000 at 6.5% over 30 years.
Make your plan
Payoff calculator
Add $200 a month and watch $111,892 of interest die. Lump sums and milestones too.
Amortization schedule
Every payment, split into interest and principal. $200 a month deletes 67 rows.
Debt-free by date
Pick the month; it finds the smallest extra that gets there. Twenty years costs $454.03 a month.
Before retirementYou are here
Paid off at 65 instead of 71 costs $221.89 a month. Priced in birthdays, not dates.
Weigh your options
Prepay vs invest
The market has to beat your mortgage rate after tax. Both roads run to the cent.
Bi-weekly payments
Half-payments every two weeks finish 5 years 10 months sooner. The paid programs get priced too.
Recast
A $50,000 lump can cut the payment $319.60 a month. The lower payment’s price: $137,661.
Refinance
The advertised break-even says 25 payments. The honest ledger says 20. You see both.
Today’s numbers
Payoff amount
The statement says $395,529.10. The check that clears the loan says $396,515.26.
PMI removal
Asking at 80% instead of waiting for 78% keeps $2,805. Both dates, dated.
The strongest argument is cash flow, not interest. A retirement budget with no mortgage payment needs less income. Less income means a smaller portfolio and smaller withdrawals, right when bad market years hurt most. The counterweights are real: money locked in the house, and a rate the market may beat. So price both sides. This page prices the payoff; the prepay-vs-invest calculator prices the alternative. Just don’t drift into retirement with the payment by default, unpriced.
Because “Jul 2056” means little and “you’ll be 71” means a lot. People under-plan for a future self who feels like a stranger. Ages fix that; dates don’t. The math is the same as the debt-free-by-date calculator. “By 65” means paid off by your 65th-birthday month, computed from your birth month, so the deadline is exact.
Before 59½, almost never. An early withdrawal usually pays a 10% penalty plus ordinary income tax. Wiping a 6.5% loan can cost 30 to 40% up front. No rate justifies that. After 59½ the penalty is gone but the tax is not, and one big withdrawal can push you into a higher bracket. That is why this calculator solves for a monthly amount from income. It reaches the same birthday without cracking the nest egg.
Aim later and keep the habit. The table above prices every birthday, and each one you beat deletes years of payments from your retirement budget. Two levers help at the edge: a recast at retirement can turn a lump sum into a permanently smaller payment, and every dollar you prepaid makes that payment smaller still. Partial progress is not a consolation prize. It is the same interest math, prorated.
Yes, to the cent, for the loan as entered. It is the smallest monthly extra that reaches zero balance by your birthday month. The page proves it live: it re-runs the schedule at one cent less and shows you the month it misses. If you already pay extra or brought cash, the answer is what you need on top.
No, and retirement plans go wrong on exactly this point. Paying off the loan ends principal and interest: $2,528.27 a month on the example loan. Property taxes and insurance continue as long as you own the home, and they tend to rise. This calculator is principal and interest only, like every tool on this site. Budget the escrow items separately, forever.